You said this is your home but mentioned the people upstairs. If the upstairs is part of your home, you just tell them to not turn the router off. Without a signal, you can't get on line. Maybe you might try to clarify the circumstances that allow these folks to turn the router off.
My wireless home network router set is on the second floor of my home which presents a problem sometimes the people upstairs cut router off which in turn Cuts ail Internet connections down stairs off, anything I can do to circumvent this without accessing router upstairs.